We guarantee your lid won't leak and we'll replace the seal if it ever does.
To request a new seal, please send us an email at orders@zenbivy.com with a photo of the damaged seal and confirmation of your shipping address. We'll get a new seal sent your way!
If you lost your Bivy Mug Lid, no worries! We sell replacements—https://zenbivy.com/products/bivy-mug-lid